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3 years ago

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PLEASE I NEED HELP ???????????

1 answer:

guajiro [1.7K]3 years ago

5 0

A number in between The Indian and Atlantic ocean area would be 100,000,000 km

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An architect is constructing a model building by using a ratio os 1:300. If the height of the scale model is 3 1/2 inches what i

atroni [7]

$\bf \cfrac{model}{actual}\qquad 1:300\qquad \cfrac{1}{300}\qquad \qquad \cfrac{3\frac{1}{2}}{a}=\cfrac{1}{300}\implies \cfrac{\frac{3\cdot 2+1}{2}}{a}=\cfrac{1}{300}
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\cfrac{\quad \frac{7}{2}\quad }{a}=\cfrac{1}{300}\implies \cfrac{\quad \frac{7}{2}\cdot 300\quad }{1}=a\implies 1050=a$

7 0

3 years ago

Lisa and Krystal are planning trips to ten countries this year. They have 14 countries on their bucket list, in how many ways ca

Salsk061 [2.6K]

Answer:

1,001 ways for them to decide.

Step-by-step explanation:

The order in which they will visit the countries is not important, so we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

10 countries from a set of 14. So

$C_{14,10} = \frac{14!}{10!(14-10)!} = 1001$

1,001 ways for them to decide.

8 0

2 years ago

I need help with rhombus,rectangles and squares<br>

AnnZ [28]

Answer:

a= 11, b= 12

Opposite angles of parallelogram are equal.

m<D = m<B

9b-2=106°

9b= 108°

b= 12°

Sum of the adjacent angles of a parallelogram = 180°

m<B+m<C = 180°

106°+7a-3=180°

7a = 180°-106°+3

7a=77°

a= 11°

4 0

2 years ago

What number is mid way between 2/3 and 1

horsena [70]

5/6 is an answer to your question

6 0

2 years ago

Read 2 more answers

Please help will mark brainliest

svet-max [94.6K]

Answer:

The answer is 36.9

Step-by-step explanation:

5 0

2 years ago